AMPEAK ENERGY LIMITED engages in developing, building, owning, and operating energy projects in the United Kingdom. The company operates through four segments: Project Development, Tidal, Battery Storage, and Corporate. It is involved in development of tidal power generation project; battery energy storage special purpose vehicle; and investment holding services. The company was formerly known as SIMEC Atlantis Energy Limited and changed its name to AMPEAK ENERGY LIMITED in August 2025. AMPEAK ENERGY LIMITED was incorporated in 2005 and is based in Edinburgh, the United Kingdom.